181796142 has 32 divisors (see below), whose sum is σ = 417525120. Its totient is φ = 52189920.

The previous prime is 181796137. The next prime is 181796171. The reversal of 181796142 is 241697181.

It is a self number, because there is not a number n which added to its sum of digits gives 181796142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71233 + ... + 73740.

It is an arithmetic number, because the mean of its divisors is an integer number (13047660).

Almost surely, 2^181796142 is an apocalyptic number.

181796142 is an abundant number, since it is smaller than the sum of its proper divisors (235728978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181796142 is a wasteful number, since it uses less digits than its factorization.

181796142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145008.

The product of its digits is 24192, while the sum is 39.

The square root of 181796142 is about 13483.1799661653. The cubic root of 181796142 is about 566.4934431698.

The spelling of 181796142 in words is "one hundred eighty-one million, seven hundred ninety-six thousand, one hundred forty-two".